carolguimarães2003 carolguimarães2003

19-09-2016
Mathematics

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7 (x-4) = 5x + 18
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coolcamcam26 coolcamcam26

19-09-2016

7 (x-4) = 5x + 18
7x - 28 = 5x + 18
-5x -5x
------------------------
2x-28=18
+28 +28
-------------------
2x = 46
----- ------
2 2
x= 23

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